Cut and paste from big chocs OP on the main 5:2 thread: Recent trials with Type 2 diabetics and those at risk of having it used a form of daily fasting - skipping supper. Their conclusions: eating 1-2 meals per day is better than several small meals for losing weight and controlling insulin levels, see Type2Paper
Personally I am not disciplined enough to do that and am a bit of a grazer but I tend to stop eating by 6.00 ish most days. I often have had all my cals by 3.00 and then try to stick to drinks - when that happens I save a portion of everyone else's dinner to have the next day.
I have been back on it the last few days but just losing the weekend weight, really hope I can lose some new weight by the end of this week as have yoyoed the same 4 lbs since our easter hol.
Sputnik the same applies to potatoes, refrigeration causes resistant starch to develop....bring on the potato salad! {Wonders if cold pizza is a health food}